background: the sperm count and function may be affected by karyotype abnormalities or microdeletion in y chromosome. these genetic abnormalities can probably transmit to the children. objective: in this study, we tried to determine the frequency of karyotype abnormalities and y chromosome microdeletions in severe oligospermic or azoospermic men who fathered sons by icsi. materials and methods:...

In the last several decades, the incidence of prematurity in the United States has remained relatively constant at approximately 10%. Maternal risk factors for prematurity include absence of prenatal care, low socioeconomic status, tobacco abuse, poor nutrition, and genitourinary tract infections, to name only a few. Despite relatively constant rates of prematurity, perinatal mortality rates ha...

purpose : to evaluate the incidence and risk factors of severe visual impairment and retinopathy of prematurity (rop)-related blindness in a tertiary eye hospital in iran methods : in a cross-sectional study, clinical data of premature infants screened for rop in farabi eye hospital during 2003-2007 were reviewed. characteristics of advanced stages of rop (stage 4 or 5) were determined and comp...

conclusions approximately one quarter of premature neonates had early mortality, which can be predicted by low gestational age, low birth weight, low apgar score, need to intensive supports, postpartum complications, multiple gestation and history of maternal illnesses. objectives we aimed to determine mortality rate and its main indicators among premature neonates in our region with the aim of...